If it could be put to use in a pragmatic manner on a wide scale, then great news.
Nonetheless, the thought that comes to mind is that we simultaneously need to restrict the production of plastic by upping the investment into biodegradable products.
Because, clearly, if such enzyme-based technology becomes widely available, then the incentive for the petrochemical industry to lower their plastic production is not curbed.
At the contrary, now that enzymes eat away at the plastic garbage, why bother with downsizing the supply of plastic?